Electrical installation
Important notes
5
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EDKVF9333V DE/EN/FR 7.2
5 Electrical installation
5.1 Important notes
Stop!
The drive controller contains electrostatically sensitive components.
The personnel must be free of electrostatic charge when carrying out assembly
and service operations.
Note!
An earth−leakage circuit breaker between the supplying mains and the
controller can be activated by mistake ...
ƒ by capacitive compensation currents of the cable shields during operation
(especially with long, shielded motor cables),
ƒ by simultaneous connection of several controllers to the mains supply,
ƒ if additional interference filters are used.
5.2 Installation according to EMC (installation of a CE−typical drive system)
ƒ Connect all components (drive controller, choke, filter) to a central earthing point
(PE rail).
Mains connection, DC supply
ƒ If a mains filter or RFI filter is used, install a shielded cable between mains filter or
RFI filter and drive controller if it is longer than 300 mm.
ƒ For DC−bus operation or DC supply, use shielded cables.
Motor cables
ƒ Use only shielded motor cables with braid made of tinned or nickel−plated copper.
Shields made of steel braid are not suitable.
– The overlap rate of the braid must be at least 70 % with an overlap angle of 90 °.
ƒ Always connect the shield of the motor cable at both sides − at the drive controller
and at the motor.
– Always connect shields with a surface as large as possible to the conducting and
earthed mounting plate. Also use the shield connections on the device.
ƒ The motor cable is perfectly installed if
– it is routed separately of mains cables and control cables,
– it crosses mains cables and control cables only at a right angle,
– it is not interrupted.
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